If edges of a cuboid are 3 cm, 4 cm and 12 cm then length of its diagonal is .


A) \( \Large \sqrt{5} cm \)

B) \( \Large \sqrt{19} cm \)

C) 12 cm

D) 13 cm

Correct Answer:
D) 13 cm

Description for Correct answer:

\( \Large d = \sqrt{3^{2}+4^{2}+12^{2}} = \sqrt{169} =\ 13\ cm \)


Part of solved Mensuration questions and answers : >> Aptitude >> Mensuration








Comments

No comments available




Similar Questions
1). The area of a rhombus with side 50 cm and one of the diagonals 80 cm is
A). \( \Large 1600 cm^{2} \)
B). \( \Large 500 cm^{2} \)
C). \( \Large 1200 cm^{2} \)
D). \( \Large 2400 cm^{2} \)
-- View Answer
2). If radius of a cone is increased by 50% and its height is decreased by 20%, then volume of the cone
A). reduced by 20%
B). remains the same
C). increases by 50%
D). increases by 80%
-- View Answer
3). A right pyramid 10 cm high has a square base of which the diagonal is 10 cm. The whole surface area is
A). \( \Large 200 cm^{2} \)
B). \( \Large 205 cm^{2} \)
C). \( \Large 210 cm^{2} \)
D). \( \Large 220 cm^{2} \)
-- View Answer
4). Volume of a right circular cylinder and volume of a sphere (whose radius is same as that of cylinder) are equal, if height of the cylinder is
A). \( \Large \frac{4}{5}\ times\ of\ its\ radius \)
B). \( \Large \frac{4}{3}\ times\ of\ its\ radius \)
C). equal to its radius
D). equal to its diameter
-- View Answer
5). Six cubes, each with 10 cm are joined end to end in a row. The surface area of resulting cuboid is
A). \( \Large 2600 cm^{2} \)
B). \( \Large 2400 cm^{2} \)
C). \( \Large 1400 cm^{2} \)
D). \( \Large 600 cm^{2} \)
-- View Answer


6). If volume of a cube is \( \Large 729 cm^{3} \), then total surface area of the cube is
A). \( \Large 216 cm^{2} \)
B). \( \Large 384 cm^{2} \)
C). \( \Large 486 cm^{2} \)
D). \( \Large 512 cm^{2} \)
-- View Answer
7). A plot of land is in the shape of a right angled isosceles triangle. Length of the hypotenuse side is \( \Large 50\sqrt{2} m \). If cost of fencing is Rs. 2 per meter, then cost of fencing the plot is
A). Rs.381
B). Rs.341
C). Rs,391
D). Rs.371
-- View Answer
8). A 10m wide lawn is culivated all along the outside of a rectangular plot measuring \( \Large 100 m \times 50 m \). The total area of the lawn is
A). \( \Large 750 m^{2} \)
B). \( \Large 5000 m^{2} \)
C). \( \Large 2800 m^{2} \)
D). \( \Large 3400 m^{2} \)
-- View Answer
9). If a circle and a square have same area, then ratio of the side of the square and radius of the circle is
A). \( \Large \sqrt{ \pi } : 1 \)
B). \( \Large 1 : \sqrt{ \pi } \)
C). \( \Large 1 : \pi \)
D). \( \Large \pi : 1 \)
-- View Answer
10). Two cones have their heights in the ratio 2 : 3 and radii of their bases in the ratio 3 : 4. The ratio of their volumes is
A). 3 : 6
B). 3 : 8
C). 3 : 7
D). 3 : 5
-- View Answer